Trench-bomb.



T. E. MURRAY, JR. TRENCH BOM B.

APPLICATION FILED APR-8. I9I8.

1,295,569. I Patented Feb. 25, 1919.

THOMAS E. MURRAY, JR., OF BROOKLYN, NEW YORK.

TRENGH-BOMB.

Specification of Letters Patent.

Patented Feb. 25, 1919.

Application filed April 8, 1918. Serial No. 227,226. I

T 0 all whom it may concern 'Be it known that I, THOMAS E. MURRAY, J r.,a citizen of the United States, residing at Brooklyn, in the county ofKings and State of New York, have invented a certain new and usefulImprovement in Trench- Bombs, of which the. following is aspecification.

The invention is a trench bomb, which may be manufactured at a less costthan trench bombs otherwise produced, and which is of great strengthbecause it is everywhere integral.

In the accompanying drawings- Figure 1 is a perspective view, showingthe completed bomb. Fig. 2 is a longitudinal section of the shapingdies, with one of the bomb sections in place therein. Fig. 3 is alongitudinal section of the Welding electrodes, showing both sections ofthe bomb in welding position in said electrodes.

Similar letters of reference indicate like parts.

The shell of the bomb is made of sheet metal, and comprises integrally atubular body portion A, having circumferential ribs 13 at its endportions, and heads C, D, the head C having a tubular projection E, andthe head D having a tubular projection F, with perforations'in its wall.The tube E is designed to receive the usual fuse, the body portion Acontains the blowing charge, the ribs B fit in the bore of the trenchmortar, and the projection F contains the impelling charge. Preferably,said charge is placed in erforated cup H, which is inserted in the tu eF, as shown in Fig. 3, the open end of said cup being flanged over tocover the extremity of sald pro ectien.

The shell is made in two longitudinally divided sections 1, J, exactlyalike, said sections being individually formed by pressing the metalplate between dies K, L, as shown in Fig. 2. 'Two of said sections arethen seated in recesses in electrodes M, N with their edges in contact,and at said edges are electrically welded together.

The cup H may also be made in two 1ongitudinal sections, and inserted inthe projection F before the shell sections I, J are welded, so that thesections of the cup are united simultaneously with the uniting of thesections of the shell.

I claim:

1. As a new article of manufacture and sale, a trench bomb formed of twosimilar longitudinal half sections struck up from sheet metal andelectrically welded at their edges, each section inte rally consistingof a tubular body portion or receiving the exploding charge, and atopposite ends of said body portion, respectively, tubes of less diameterfor receiving the impelling charge and the fuse, the said body portionhaving near each end acircumferential rib.

2. The article of manufacture and sale, as set forth in claim 1, furtherincluding a tubular cup outwardly flanged at its end. and entering saidimpelling charge-receiving tube, the said cup and tube havingperforations in their walls.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

THOMAS E. MURRAY,

